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HD 31572


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New periodic variables from the Hipparcos epoch photometry
Two selection statistics are used to extract new candidate periodicvariables from the epoch photometry of the Hipparcos catalogue. Theprimary selection criterion is a signal-to-noise ratio. The dependenceof this statistic on the number of observations is calibrated usingabout 30000 randomly permuted Hipparcos data sets. A significance levelof 0.1 per cent is used to extract a first batch of candidate variables.The second criterion requires that the optimal frequency be unaffectedif the data are de-trended by low-order polynomials. We find 2675 newcandidate periodic variables, of which the majority (2082) are from theHipparcos`unsolved' variables. Potential problems with theinterpretation of the data (e.g. aliasing) are discussed.

The 74th Special Name-list of Variable Stars
We present the Name-list introducing GCVS names for 3153 variable starsdiscovered by the Hipparcos mission.

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Observation and Astrometry data

Constellation:Caelum
Right ascension:04h55m49.96s
Declination:-27°42'16.5"
Apparent magnitude:8.458
Distance:606.061 parsecs
Proper motion RA:6.5
Proper motion Dec:-16.3
B-T magnitude:10.367
V-T magnitude:8.616

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 31572
TYCHO-2 2000TYC 6472-157-1
USNO-A2.0USNO-A2 0600-02052104
HIPHIP 22912

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